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| author |   Eric Dumazet <edumazet@google.com> | 2012-07-10 10:03:41 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2012-07-10 23:33:12 -0700 |
| commit | b28ba72665356438e3a6e3be365c3c3071496840 (patch) | |
| tree | 2cf9ff84993f821cd4819db7dd609db1ccbf38f6 /drivers/net/ethernet/broadcom/bnx2.c | |
| parent | net: Fix memory leak - vlan_info struct (diff) | |
| download | linux-dev-b28ba72665356438e3a6e3be365c3c3071496840.tar.xz linux-dev-b28ba72665356438e3a6e3be365c3c3071496840.zip | |
IPoIB: fix skb truesize underestimatiom
Or Gerlitz reported triggering of WARN_ON_ONCE(delta < len); in
skb_try_coalesce()
This warning tracks drivers that incorrectly set skb->truesize
IPoIB indeed allocates a full page to store a fragment, but only
accounts in skb->truesize the used part of the page (frame length)
This patch fixes skb truesize underestimation, and
also fixes a performance issue, because RX skbs have not enough tailroom
to allow IP and TCP stacks to pull their header in skb linear part
without an expensive call to pskb_expand_head()
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Or Gerlitz <ogerlitz@mellanox.com>
Cc: Erez Shitrit <erezsh@mellanox.com>
Cc: Shlomo Pongartz <shlomop@mellanox.com>
Cc: Roland Dreier <roland@purestorage.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions